ES256898A1 - Process for the manufacture of methionine - Google Patents
Process for the manufacture of methionineInfo
- Publication number
- ES256898A1 ES256898A1 ES0256898A ES256898A ES256898A1 ES 256898 A1 ES256898 A1 ES 256898A1 ES 0256898 A ES0256898 A ES 0256898A ES 256898 A ES256898 A ES 256898A ES 256898 A1 ES256898 A1 ES 256898A1
- Authority
- ES
- Spain
- Prior art keywords
- distillation column
- reaction mixture
- methionine
- ammonia
- hydrocyanic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/142—Amino acids; Derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/04—Processes using organic exchangers
- B01J39/07—Processes using organic exchangers in the weakly acidic form
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for preparing methionine, methylthiopropionic aldehyde is reacted with ammonia and hydrocyanic acid in a dilute alcoholic solution containing not more than 5% by weight of methylthiopropionic aldehyde, the reaction mixture is freed from excess ammonia and hydrocyanic acid by evaporation and concentrated in a distillation column (in which the escaping vapours of alcohol are drawn off by a pump, compressed and used for the indirect heating of the sump portion of the distillation column and, after having been liquefied, are partly pumped to the head of the distillation column) and after removal of the solvent from the solution of the reaction mixture collected in the sump of the column the reaction product is converted into methionine by hydrolysis. Specification 670,774 and U.S.A. Specifications 2,485,236, 2,520,312, 2,543,768, 2,557,013, 2,564,105, 2,732,400 and Swiss Specification 257,403 are referred to.ALSO:In a process for preparing methionine, methylthiopropionic aldehyde is reacted with ammonia and hydrocyanic acid in a dilute alcoholic solution containing not more than 5% by weight of methylthiopropionic aldehyde, the reaction mixture is freed from excess ammonia and hydrocyanic acid by evaporation, and concentrated in a distillation column (in which the escaping vapours of alcohol are drawn off by a pump, compressed and used for the indirect heating of the sump portion of the distillation column, and having been liquified, are partly pumped to the head of the distillation column) and after removal of the solvent from the solution of the reaction mixture collected in the sump of the column, the reaction mixture is converted into methionine by hydrolysis preferably by passing the nitrile over a strongly acidic ion-exchanger, and eluting with ammonia. Specification p 670,774, Swiss Specification 257,403 and U.S.A. Specifications 2,485,236, 2,520,312, 2,543,768, 2,557,013, 2,564,105 and 2,732,400 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH7292359A CH379524A (en) | 1959-05-05 | 1959-05-05 | Process for the production of methionine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES256898A1 true ES256898A1 (en) | 1960-07-01 |
Family
ID=4532207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0256898A Expired ES256898A1 (en) | 1959-05-05 | 1960-03-28 | Process for the manufacture of methionine |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE589132A (en) |
| CH (1) | CH379524A (en) |
| ES (1) | ES256898A1 (en) |
| GB (1) | GB892755A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716596A (en) | 1992-06-23 | 1998-02-10 | Diatide, Inc. | Radioactively labeled somatostatin-derived peptides for imaging and therapeutic uses |
-
1959
- 1959-05-05 CH CH7292359A patent/CH379524A/en unknown
-
1960
- 1960-03-28 BE BE589132A patent/BE589132A/en unknown
- 1960-03-28 ES ES0256898A patent/ES256898A1/en not_active Expired
- 1960-04-08 GB GB12588/60A patent/GB892755A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB892755A (en) | 1962-03-28 |
| BE589132A (en) | 1960-07-18 |
| CH379524A (en) | 1964-07-15 |
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